Hello there and welcome to HCM,
your complaint of sore throat
shows you are suffering from pharyngitis
,red bumps on the back of tongue shows your lingual tonsills are inflammed and ulcerated. An antibiotic course of augmentin
with analgesics for 5 to 7 days will make you feel better. regular gargling of mouth with antiseptic mouth rinse like betadine
or chlorexidine will give soothing effect. drink 8 glasses of water a day and keep yourself hydrated. avoid hot and spicy foodstuffs. i hope this helps you , take care.